rule win_liteduke_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.liteduke."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.liteduke"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { ff75fc ff15???????? 6830750000 ff15???????? ff35???????? e8???????? }
            // n = 6, score = 200
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   ff15????????         |                     
            //   6830750000           | push                0x7530
            //   ff15????????         |                     
            //   ff35????????         |                     
            //   e8????????           |                     

        $sequence_1 = { 8945d0 8b4518 0500010000 c1e002 }
            // n = 4, score = 200
            //   8945d0               | mov                 dword ptr [ebp - 0x30], eax
            //   8b4518               | mov                 eax, dword ptr [ebp + 0x18]
            //   0500010000           | add                 eax, 0x100
            //   c1e002               | shl                 eax, 2

        $sequence_2 = { 56 57 6a40 6800300000 ff750c 6a00 e8???????? }
            // n = 7, score = 200
            //   56                   | push                esi
            //   57                   | push                edi
            //   6a40                 | push                0x40
            //   6800300000           | push                0x3000
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   6a00                 | push                0
            //   e8????????           |                     

        $sequence_3 = { ff75e4 ff15???????? 837de800 7410 6800800000 6a00 ff75e8 }
            // n = 7, score = 200
            //   ff75e4               | push                dword ptr [ebp - 0x1c]
            //   ff15????????         |                     
            //   837de800             | cmp                 dword ptr [ebp - 0x18], 0
            //   7410                 | je                  0x12
            //   6800800000           | push                0x8000
            //   6a00                 | push                0
            //   ff75e8               | push                dword ptr [ebp - 0x18]

        $sequence_4 = { 6a00 e8???????? 58 ff90b5f3ffff }
            // n = 4, score = 200
            //   6a00                 | push                0
            //   e8????????           |                     
            //   58                   | pop                 eax
            //   ff90b5f3ffff         | call                dword ptr [eax - 0xc4b]

        $sequence_5 = { 55 89e5 ff7508 e8???????? ff7508 e8???????? }
            // n = 6, score = 200
            //   55                   | push                ebp
            //   89e5                 | mov                 ebp, esp
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     

        $sequence_6 = { c1c006 243f 3c3e 7205 c0e002 2c0e 2c04 }
            // n = 7, score = 200
            //   c1c006               | rol                 eax, 6
            //   243f                 | and                 al, 0x3f
            //   3c3e                 | cmp                 al, 0x3e
            //   7205                 | jb                  7
            //   c0e002               | shl                 al, 2
            //   2c0e                 | sub                 al, 0xe
            //   2c04                 | sub                 al, 4

        $sequence_7 = { 01d8 51 52 55 50 ff15???????? 5a }
            // n = 7, score = 200
            //   01d8                 | add                 eax, ebx
            //   51                   | push                ecx
            //   52                   | push                edx
            //   55                   | push                ebp
            //   50                   | push                eax
            //   ff15????????         |                     
            //   5a                   | pop                 edx

        $sequence_8 = { 8945a0 6a00 6a00 6a00 6a04 ff75a0 ff15???????? }
            // n = 7, score = 200
            //   8945a0               | mov                 dword ptr [ebp - 0x60], eax
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6a04                 | push                4
            //   ff75a0               | push                dword ptr [ebp - 0x60]
            //   ff15????????         |                     

        $sequence_9 = { 8b45f4 8b5df8 c9 c20400 55 89e5 83ec18 }
            // n = 7, score = 200
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   8b5df8               | mov                 ebx, dword ptr [ebp - 8]
            //   c9                   | leave               
            //   c20400               | ret                 4
            //   55                   | push                ebp
            //   89e5                 | mov                 ebp, esp
            //   83ec18               | sub                 esp, 0x18

    condition:
        7 of them and filesize < 1171456
}